The WVI-405M-50BW02 from Wevercomm is a RF & Microwave Isolator with Frequency 380 to 430 MHz, Average Power Forward 10 W, Average Power Reverse 10 W, Insertion Loss 0.6 dB, Isolation 18 dB. Tags: Drop-In, Drop-In Isolator. More details for WVI-405M-50BW02 can be seen below.